I don't disagree.
a fence-topped wall with towers every 1000meters, laced with sensors and the towers armed with 50BMGs, would END the problem as we know it.
BTW, the Libyans were crossing during the time that the US bombed some of Momar's military installations and personal residences. When the Libyans were caught, the media made abrief mention that they were captured. Later, info trickled out that the dudes were Libyan commandos or intel agents sent to target US military bases.